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Finding the Fourth Proportional to 31,242, 43,119.08 and 18,001.68

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Solution

The fourth proportional to 31,242, 43,119.08 and 18,001.68 is: 24,845.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,242 : 43,119.08 = 18,001.68 : x
  2. Step 2: Convert to fraction form
    31,242/43,119.08 = 18,001.68/x
  3. Step 3: Cross multiply
    31,242x = 43,119.08 × 18,001.68
  4. Step 4: Simplify right side
    31,242x = 776,215,880.05
  5. Step 5: Solve for x
    x = 776,215,880.05/31,242
  6. Step 6: Final answer
    x = 24,845.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.